Description
Precision:
| Parameter | Symbol | Value | |
|---|---|---|---|
| Length (m) | L | ||
| Kinematic viscosity (m2 s-1) | ν | ||
| Nikuradse roughness (m) | ks | ||
| Minor loss coefficient | K | ||
| Calculate or specify friction factor? | |||
| Darcy friction factor | λ | ||
| Diameter (m) | D | ||
| Head loss (m) | h | ||
| Quantity of flow (m3 s-1) | Q | ||
Set any two of D, h, Q and calculate the third.
(Note that many engineers use f for friction factor, with λ being equivalent to either f or 4f. The value here is 4 times the skin-friction coefficient.)